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authorHuang Shijie <b32955@freescale.com>2014-05-21 03:09:47 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-05-28 21:40:43 +0200
commit8eccd0cd2106fbe0acc6bec3701e69e171353f25 (patch)
tree69e88314befcf4ad5ff6821318a7883d9e346ce6 /drivers/tty
parentserial: imx: reset the uart port all the time (diff)
downloadlinux-8eccd0cd2106fbe0acc6bec3701e69e171353f25.tar.xz
linux-8eccd0cd2106fbe0acc6bec3701e69e171353f25.zip
serial: imx: remove the redundant code
In the imx_startup(), we will reset the uart port which will reset all the FIFOs, including the URXD. So the code to clear the RX FIFO is redundant. Just remove it. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/imx.c9
1 files changed, 0 insertions, 9 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 060ae9753923..d373fe83da52 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -1161,15 +1161,6 @@ static int imx_startup(struct uart_port *port)
temp |= UCR2_IRTS;
writel(temp, sport->port.membase + UCR2);
- if (USE_IRDA(sport)) {
- /* clear RX-FIFO */
- int i = 64;
- while ((--i > 0) &&
- (readl(sport->port.membase + URXD0) & URXD_CHARRDY)) {
- barrier();
- }
- }
-
if (!is_imx1_uart(sport)) {
temp = readl(sport->port.membase + UCR3);
temp |= IMX21_UCR3_RXDMUXSEL | UCR3_ADNIMP;